This is my first game from Wastelands. So far I am liking it. I would probably compare it to Commander EAW. This is a good thing, because that was a great game. What I would like to know is what do the symbols next to the city hexes stand for. I get the numbers; the left number seems to be max supply generated, and the right number looks like the hex victory points. What I need to know is why some cities have oil barrels, or drops of oil next to them? I don't see where I have a stockpile of oil. Do my motorized units use oil to move? If so is this split out from supply consumption? I think I missed this in the manual and the tutorials. Can someone more familiar please explain?